projects / fio.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
gfio: remove warning on g_type_init() being deprecated
[fio.git] / server.c
... / ...
CommitLineData
1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <sys/poll.h>
8#include <sys/types.h>
9#include <sys/wait.h>
10#include <sys/socket.h>
11#include <sys/stat.h>
12#include <sys/un.h>
13#include <sys/uio.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19#ifdef CONFIG_ZLIB
20#include <zlib.h>
21#endif
22
23#include "fio.h"
24#include "server.h"
25#include "crc/crc16.h"
26#include "lib/ieee754.h"
27
28int fio_net_port = FIO_NET_PORT;
29
30int exit_backend = 0;
31
32static int server_fd = -1;
33static char *fio_server_arg;
34static char *bind_sock;
35static struct sockaddr_in saddr_in;
36static struct sockaddr_in6 saddr_in6;
37static int use_ipv6;
38#ifdef CONFIG_ZLIB
39static unsigned int has_zlib = 1;
40#else
41static unsigned int has_zlib = 0;
42#endif
43static unsigned int use_zlib;
44
45struct fio_fork_item {
46 struct flist_head list;
47 int exitval;
48 int signal;
49 int exited;
50 pid_t pid;
51};
52
53static const char *fio_server_ops[FIO_NET_CMD_NR] = {
54 "",
55 "QUIT",
56 "EXIT",
57 "JOB",
58 "JOBLINE",
59 "TEXT",
60 "TS",
61 "GS",
62 "SEND_ETA",
63 "ETA",
64 "PROBE",
65 "START",
66 "STOP",
67 "DISK_UTIL",
68 "SERVER_START",
69 "ADD_JOB",
70 "CMD_RUN",
71 "CMD_IOLOG",
72};
73
74const char *fio_server_op(unsigned int op)
75{
76 static char buf[32];
77
78 if (op < FIO_NET_CMD_NR)
79 return fio_server_ops[op];
80
81 sprintf(buf, "UNKNOWN/%d", op);
82 return buf;
83}
84
85static ssize_t iov_total_len(const struct iovec *iov, int count)
86{
87 ssize_t ret = 0;
88
89 while (count--) {
90 ret += iov->iov_len;
91 iov++;
92 }
93
94 return ret;
95}
96
97static int fio_sendv_data(int sk, struct iovec *iov, int count)
98{
99 ssize_t total_len = iov_total_len(iov, count);
100 ssize_t ret;
101
102 do {
103 ret = writev(sk, iov, count);
104 if (ret > 0) {
105 total_len -= ret;
106 if (!total_len)
107 break;
108
109 while (ret) {
110 if (ret >= iov->iov_len) {
111 ret -= iov->iov_len;
112 iov++;
113 continue;
114 }
115 iov->iov_base += ret;
116 iov->iov_len -= ret;
117 ret = 0;
118 }
119 } else if (!ret)
120 break;
121 else if (errno == EAGAIN || errno == EINTR)
122 continue;
123 else
124 break;
125 } while (!exit_backend);
126
127 if (!total_len)
128 return 0;
129
130 if (errno)
131 return -errno;
132
133 return 1;
134}
135
136int fio_send_data(int sk, const void *p, unsigned int len)
137{
138 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
139
140 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
141
142 return fio_sendv_data(sk, &iov, 1);
143}
144
145int fio_recv_data(int sk, void *p, unsigned int len)
146{
147 do {
148 int ret = recv(sk, p, len, MSG_WAITALL);
149
150 if (ret > 0) {
151 len -= ret;
152 if (!len)
153 break;
154 p += ret;
155 continue;
156 } else if (!ret)
157 break;
158 else if (errno == EAGAIN || errno == EINTR)
159 continue;
160 else
161 break;
162 } while (!exit_backend);
163
164 if (!len)
165 return 0;
166
167 return -1;
168}
169
170static int verify_convert_cmd(struct fio_net_cmd *cmd)
171{
172 uint16_t crc;
173
174 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
175 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
176
177 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
178 if (crc != cmd->cmd_crc16) {
179 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
180 cmd->cmd_crc16, crc);
181 return 1;
182 }
183
184 cmd->version = le16_to_cpu(cmd->version);
185 cmd->opcode = le16_to_cpu(cmd->opcode);
186 cmd->flags = le32_to_cpu(cmd->flags);
187 cmd->tag = le64_to_cpu(cmd->tag);
188 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
189
190 switch (cmd->version) {
191 case FIO_SERVER_VER:
192 break;
193 default:
194 log_err("fio: bad server cmd version %d\n", cmd->version);
195 return 1;
196 }
197
198 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
199 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
200 return 1;
201 }
202
203 return 0;
204}
205
206/*
207 * Read (and defragment, if necessary) incoming commands
208 */
209struct fio_net_cmd *fio_net_recv_cmd(int sk)
210{
211 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
212 size_t cmd_size = 0, pdu_offset = 0;
213 uint16_t crc;
214 int ret, first = 1;
215 void *pdu = NULL;
216
217 do {
218 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
219 if (ret)
220 break;
221
222 /* We have a command, verify it and swap if need be */
223 ret = verify_convert_cmd(&cmd);
224 if (ret)
225 break;
226
227 if (first) {
228 /* if this is text, add room for \0 at the end */
229 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
230 assert(!cmdret);
231 } else
232 cmd_size += cmd.pdu_len;
233
234 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
235 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
236 ret = 1;
237 break;
238 }
239
240 tmp = realloc(cmdret, cmd_size);
241 if (!tmp) {
242 log_err("fio: server failed allocating cmd\n");
243 ret = 1;
244 break;
245 }
246 cmdret = tmp;
247
248 if (first)
249 memcpy(cmdret, &cmd, sizeof(cmd));
250 else if (cmdret->opcode != cmd.opcode) {
251 log_err("fio: fragment opcode mismatch (%d != %d)\n",
252 cmdret->opcode, cmd.opcode);
253 ret = 1;
254 break;
255 }
256
257 if (!cmd.pdu_len)
258 break;
259
260 /* There's payload, get it */
261 pdu = (void *) cmdret->payload + pdu_offset;
262 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
263 if (ret)
264 break;
265
266 /* Verify payload crc */
267 crc = fio_crc16(pdu, cmd.pdu_len);
268 if (crc != cmd.pdu_crc16) {
269 log_err("fio: server bad crc on payload ");
270 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
271 ret = 1;
272 break;
273 }
274
275 pdu_offset += cmd.pdu_len;
276 if (!first)
277 cmdret->pdu_len += cmd.pdu_len;
278 first = 0;
279 } while (cmd.flags & FIO_NET_CMD_F_MORE);
280
281 if (ret) {
282 free(cmdret);
283 cmdret = NULL;
284 } else if (cmdret) {
285 /* zero-terminate text input */
286 if (cmdret->pdu_len) {
287 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
288 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
289 char *buf = (char *) pdu->buf;
290
291 buf[pdu->buf_len] = '\0';
292 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
293 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
294 char *buf = (char *) pdu->buf;
295 int len = le32_to_cpu(pdu->buf_len);
296
297 buf[len] = '\0';
298 }
299 }
300
301 /* frag flag is internal */
302 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
303 }
304
305 return cmdret;
306}
307
308static void add_reply(uint64_t tag, struct flist_head *list)
309{
310 struct fio_net_cmd_reply *reply;
311
312 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
313 flist_add_tail(&reply->list, list);
314}
315
316static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
317{
318 struct fio_net_cmd_reply *reply;
319
320 reply = calloc(1, sizeof(*reply));
321 INIT_FLIST_HEAD(&reply->list);
322 gettimeofday(&reply->tv, NULL);
323 reply->saved_tag = tag;
324 reply->opcode = opcode;
325
326 return (uintptr_t) reply;
327}
328
329static void free_reply(uint64_t tag)
330{
331 struct fio_net_cmd_reply *reply;
332
333 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
334 free(reply);
335}
336
337void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
338{
339 uint32_t pdu_len;
340
341 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
342
343 pdu_len = le32_to_cpu(cmd->pdu_len);
344 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
345}
346
347void fio_net_cmd_crc(struct fio_net_cmd *cmd)
348{
349 fio_net_cmd_crc_pdu(cmd, cmd->payload);
350}
351
352int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
353 uint64_t *tagptr, struct flist_head *list)
354{
355 struct fio_net_cmd *cmd = NULL;
356 size_t this_len, cur_len = 0;
357 uint64_t tag;
358 int ret;
359
360 if (list) {
361 assert(tagptr);
362 tag = *tagptr = alloc_reply(*tagptr, opcode);
363 } else
364 tag = tagptr ? *tagptr : 0;
365
366 do {
367 this_len = size;
368 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
369 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
370
371 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
372 if (cmd)
373 free(cmd);
374
375 cur_len = sizeof(*cmd) + this_len;
376 cmd = malloc(cur_len);
377 }
378
379 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
380
381 if (this_len < size)
382 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
383
384 fio_net_cmd_crc(cmd);
385
386 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
387 size -= this_len;
388 buf += this_len;
389 } while (!ret && size);
390
391 if (list) {
392 if (ret)
393 free_reply(tag);
394 else
395 add_reply(tag, list);
396 }
397
398 if (cmd)
399 free(cmd);
400
401 return ret;
402}
403
404static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
405{
406 struct fio_net_cmd cmd;
407
408 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
409 fio_net_cmd_crc(&cmd);
410
411 return fio_send_data(sk, &cmd, sizeof(cmd));
412}
413
414/*
415 * If 'list' is non-NULL, then allocate and store the sent command for
416 * later verification.
417 */
418int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
419 struct flist_head *list)
420{
421 int ret;
422
423 if (list)
424 tag = alloc_reply(tag, opcode);
425
426 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
427 if (ret) {
428 if (list)
429 free_reply(tag);
430
431 return ret;
432 }
433
434 if (list)
435 add_reply(tag, list);
436
437 return 0;
438}
439
440int fio_net_send_quit(int sk)
441{
442 dprint(FD_NET, "server: sending quit\n");
443
444 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
445}
446
447static int fio_net_send_ack(int sk, struct fio_net_cmd *cmd, int error,
448 int signal)
449{
450 struct cmd_end_pdu epdu;
451 uint64_t tag = 0;
452
453 if (cmd)
454 tag = cmd->tag;
455
456 epdu.error = __cpu_to_le32(error);
457 epdu.signal = __cpu_to_le32(signal);
458 return fio_net_send_cmd(sk, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, NULL);
459}
460
461int fio_net_send_stop(int sk, int error, int signal)
462{
463 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
464 return fio_net_send_ack(sk, NULL, error, signal);
465}
466
467static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
468{
469 struct fio_fork_item *ffi;
470
471 ffi = malloc(sizeof(*ffi));
472 ffi->exitval = 0;
473 ffi->signal = 0;
474 ffi->exited = 0;
475 ffi->pid = pid;
476 flist_add_tail(&ffi->list, list);
477}
478
479static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
480{
481 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
482 fio_server_add_fork_item(pid, conn_list);
483}
484
485static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
486{
487 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
488 fio_server_add_fork_item(pid, job_list);
489}
490
491static void fio_server_check_fork_item(struct fio_fork_item *ffi)
492{
493 int ret, status;
494
495 ret = waitpid(ffi->pid, &status, WNOHANG);
496 if (ret < 0) {
497 if (errno == ECHILD) {
498 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
499 ffi->exited = 1;
500 } else
501 log_err("fio: waitpid: %s\n", strerror(errno));
502 } else if (ret == ffi->pid) {
503 if (WIFSIGNALED(status)) {
504 ffi->signal = WTERMSIG(status);
505 ffi->exited = 1;
506 }
507 if (WIFEXITED(status)) {
508 if (WEXITSTATUS(status))
509 ffi->exitval = WEXITSTATUS(status);
510 ffi->exited = 1;
511 }
512 }
513}
514
515static void fio_server_fork_item_done(struct fio_fork_item *ffi)
516{
517 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
518
519 /*
520 * Fold STOP and QUIT...
521 */
522 fio_net_send_stop(server_fd, ffi->exitval, ffi->signal);
523 fio_net_send_quit(server_fd);
524 flist_del(&ffi->list);
525 free(ffi);
526}
527
528static void fio_server_check_fork_items(struct flist_head *list)
529{
530 struct flist_head *entry, *tmp;
531 struct fio_fork_item *ffi;
532
533 flist_for_each_safe(entry, tmp, list) {
534 ffi = flist_entry(entry, struct fio_fork_item, list);
535
536 fio_server_check_fork_item(ffi);
537
538 if (ffi->exited)
539 fio_server_fork_item_done(ffi);
540 }
541}
542
543static void fio_server_check_jobs(struct flist_head *job_list)
544{
545 fio_server_check_fork_items(job_list);
546}
547
548static void fio_server_check_conns(struct flist_head *conn_list)
549{
550 fio_server_check_fork_items(conn_list);
551}
552
553static int handle_run_cmd(struct flist_head *job_list, struct fio_net_cmd *cmd)
554{
555 pid_t pid;
556 int ret;
557
558 fio_time_init();
559 set_genesis_time();
560
561 pid = fork();
562 if (pid) {
563 fio_server_add_job_pid(job_list, pid);
564 return 0;
565 }
566
567 ret = fio_backend();
568 free_threads_shm();
569 _exit(ret);
570}
571
572static int handle_job_cmd(struct fio_net_cmd *cmd)
573{
574 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
575 void *buf = pdu->buf;
576 struct cmd_start_pdu spdu;
577
578 pdu->buf_len = le32_to_cpu(pdu->buf_len);
579 pdu->client_type = le32_to_cpu(pdu->client_type);
580
581 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
582 fio_net_send_quit(server_fd);
583 return -1;
584 }
585
586 spdu.jobs = cpu_to_le32(thread_number);
587 spdu.stat_outputs = cpu_to_le32(stat_number);
588 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
589 return 0;
590}
591
592static int handle_jobline_cmd(struct fio_net_cmd *cmd)
593{
594 void *pdu = cmd->payload;
595 struct cmd_single_line_pdu *cslp;
596 struct cmd_line_pdu *clp;
597 unsigned long offset;
598 struct cmd_start_pdu spdu;
599 char **argv;
600 int i;
601
602 clp = pdu;
603 clp->lines = le16_to_cpu(clp->lines);
604 clp->client_type = le16_to_cpu(clp->client_type);
605 argv = malloc(clp->lines * sizeof(char *));
606 offset = sizeof(*clp);
607
608 dprint(FD_NET, "server: %d command line args\n", clp->lines);
609
610 for (i = 0; i < clp->lines; i++) {
611 cslp = pdu + offset;
612 argv[i] = (char *) cslp->text;
613
614 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
615 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
616 }
617
618 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
619 fio_net_send_quit(server_fd);
620 free(argv);
621 return -1;
622 }
623
624 free(argv);
625
626 spdu.jobs = cpu_to_le32(thread_number);
627 spdu.stat_outputs = cpu_to_le32(stat_number);
628 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
629 return 0;
630}
631
632static int handle_probe_cmd(struct fio_net_cmd *cmd)
633{
634 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
635 struct cmd_probe_reply_pdu probe;
636 uint64_t tag = cmd->tag;
637
638 dprint(FD_NET, "server: sending probe reply\n");
639
640 memset(&probe, 0, sizeof(probe));
641 gethostname((char *) probe.hostname, sizeof(probe.hostname));
642#ifdef CONFIG_BIG_ENDIAN
643 probe.bigendian = 1;
644#endif
645 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
646
647 probe.os = FIO_OS;
648 probe.arch = FIO_ARCH;
649 probe.bpp = sizeof(void *);
650 probe.cpus = __cpu_to_le32(cpus_online());
651
652 /*
653 * If the client supports compression and we do too, then enable it
654 */
655 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
656 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
657 use_zlib = 1;
658 } else {
659 probe.flags = 0;
660 use_zlib = 0;
661 }
662
663 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL);
664}
665
666static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
667{
668 struct jobs_eta *je;
669 uint64_t tag = cmd->tag;
670 size_t size;
671 int i;
672
673 je = get_jobs_eta(1, &size);
674 if (!je)
675 return 0;
676
677 dprint(FD_NET, "server sending status\n");
678
679 je->nr_running = cpu_to_le32(je->nr_running);
680 je->nr_ramp = cpu_to_le32(je->nr_ramp);
681 je->nr_pending = cpu_to_le32(je->nr_pending);
682 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
683 je->files_open = cpu_to_le32(je->files_open);
684
685 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
686 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
687 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
688 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
689 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
690 je->rate[i] = cpu_to_le32(je->rate[i]);
691 je->iops[i] = cpu_to_le32(je->iops[i]);
692 }
693
694 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
695 je->eta_sec = cpu_to_le64(je->eta_sec);
696 je->nr_threads = cpu_to_le32(je->nr_threads);
697 je->is_pow2 = cpu_to_le32(je->is_pow2);
698 je->unit_base = cpu_to_le32(je->unit_base);
699
700 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, &tag, NULL);
701 free(je);
702 return 0;
703}
704
705static int send_update_job_reply(int fd, uint64_t __tag, int error)
706{
707 uint64_t tag = __tag;
708 uint32_t pdu_error;
709
710 pdu_error = __cpu_to_le32(error);
711 return fio_net_send_cmd(fd, FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, NULL);
712}
713
714static int handle_update_job_cmd(struct fio_net_cmd *cmd)
715{
716 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
717 struct thread_data *td;
718 uint32_t tnumber;
719
720 tnumber = le32_to_cpu(pdu->thread_number);
721
722 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
723
724 if (!tnumber || tnumber > thread_number) {
725 send_update_job_reply(server_fd, cmd->tag, ENODEV);
726 return 0;
727 }
728
729 td = &threads[tnumber - 1];
730 convert_thread_options_to_cpu(&td->o, &pdu->top);
731 send_update_job_reply(server_fd, cmd->tag, 0);
732 return 0;
733}
734
735static int handle_command(struct flist_head *job_list, struct fio_net_cmd *cmd)
736{
737 int ret;
738
739 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
740 fio_server_op(cmd->opcode), cmd->pdu_len,
741 (unsigned long long) cmd->tag);
742
743 switch (cmd->opcode) {
744 case FIO_NET_CMD_QUIT:
745 fio_terminate_threads(TERMINATE_ALL);
746 return -1;
747 case FIO_NET_CMD_EXIT:
748 exit_backend = 1;
749 return -1;
750 case FIO_NET_CMD_JOB:
751 ret = handle_job_cmd(cmd);
752 break;
753 case FIO_NET_CMD_JOBLINE:
754 ret = handle_jobline_cmd(cmd);
755 break;
756 case FIO_NET_CMD_PROBE:
757 ret = handle_probe_cmd(cmd);
758 break;
759 case FIO_NET_CMD_SEND_ETA:
760 ret = handle_send_eta_cmd(cmd);
761 break;
762 case FIO_NET_CMD_RUN:
763 ret = handle_run_cmd(job_list, cmd);
764 break;
765 case FIO_NET_CMD_UPDATE_JOB:
766 ret = handle_update_job_cmd(cmd);
767 break;
768 default:
769 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
770 ret = 1;
771 }
772
773 return ret;
774}
775
776static int handle_connection(int sk)
777{
778 struct fio_net_cmd *cmd = NULL;
779 FLIST_HEAD(job_list);
780 int ret = 0;
781
782 reset_fio_state();
783 server_fd = sk;
784
785 /* read forever */
786 while (!exit_backend) {
787 struct pollfd pfd = {
788 .fd = sk,
789 .events = POLLIN,
790 };
791
792 ret = 0;
793 do {
794 int timeout = 1000;
795
796 if (!flist_empty(&job_list))
797 timeout = 100;
798
799 ret = poll(&pfd, 1, timeout);
800 if (ret < 0) {
801 if (errno == EINTR)
802 break;
803 log_err("fio: poll: %s\n", strerror(errno));
804 break;
805 } else if (!ret) {
806 fio_server_check_jobs(&job_list);
807 continue;
808 }
809
810 if (pfd.revents & POLLIN)
811 break;
812 if (pfd.revents & (POLLERR|POLLHUP)) {
813 ret = 1;
814 break;
815 }
816 } while (!exit_backend);
817
818 fio_server_check_jobs(&job_list);
819
820 if (ret < 0)
821 break;
822
823 cmd = fio_net_recv_cmd(sk);
824 if (!cmd) {
825 ret = -1;
826 break;
827 }
828
829 ret = handle_command(&job_list, cmd);
830 if (ret)
831 break;
832
833 free(cmd);
834 cmd = NULL;
835 }
836
837 if (cmd)
838 free(cmd);
839
840 close(sk);
841 _exit(ret);
842}
843
844static int accept_loop(int listen_sk)
845{
846 struct sockaddr_in addr;
847 struct sockaddr_in6 addr6;
848 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
849 struct pollfd pfd;
850 int ret = 0, sk, exitval = 0;
851 FLIST_HEAD(conn_list);
852
853 dprint(FD_NET, "server enter accept loop\n");
854
855 fio_set_fd_nonblocking(listen_sk, "server");
856
857 while (!exit_backend) {
858 const char *from;
859 char buf[64];
860 pid_t pid;
861
862 pfd.fd = listen_sk;
863 pfd.events = POLLIN;
864 do {
865 int timeout = 1000;
866
867 if (!flist_empty(&conn_list))
868 timeout = 100;
869
870 ret = poll(&pfd, 1, timeout);
871 if (ret < 0) {
872 if (errno == EINTR)
873 break;
874 log_err("fio: poll: %s\n", strerror(errno));
875 break;
876 } else if (!ret) {
877 fio_server_check_conns(&conn_list);
878 continue;
879 }
880
881 if (pfd.revents & POLLIN)
882 break;
883 } while (!exit_backend);
884
885 fio_server_check_conns(&conn_list);
886
887 if (exit_backend || ret < 0)
888 break;
889
890 if (use_ipv6)
891 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
892 else
893 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
894
895 if (sk < 0) {
896 log_err("fio: accept: %s\n", strerror(errno));
897 return -1;
898 }
899
900 if (use_ipv6)
901 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
902 else
903 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
904
905 dprint(FD_NET, "server: connect from %s\n", from);
906
907 pid = fork();
908 if (pid) {
909 close(sk);
910 fio_server_add_conn_pid(&conn_list, pid);
911 continue;
912 }
913
914 /* exits */
915 handle_connection(sk);
916 }
917
918 return exitval;
919}
920
921int fio_server_text_output(int level, const char *buf, size_t len)
922{
923 struct cmd_text_pdu *pdu;
924 unsigned int tlen;
925 struct timeval tv;
926
927 if (server_fd == -1)
928 return log_local_buf(buf, len);
929
930 tlen = sizeof(*pdu) + len;
931 pdu = malloc(tlen);
932
933 pdu->level = __cpu_to_le32(level);
934 pdu->buf_len = __cpu_to_le32(len);
935
936 gettimeofday(&tv, NULL);
937 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
938 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
939
940 memcpy(pdu->buf, buf, len);
941
942 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, NULL, NULL);
943 free(pdu);
944 return len;
945}
946
947static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
948{
949 dst->max_val = cpu_to_le64(src->max_val);
950 dst->min_val = cpu_to_le64(src->min_val);
951 dst->samples = cpu_to_le64(src->samples);
952
953 /*
954 * Encode to IEEE 754 for network transfer
955 */
956 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
957 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
958}
959
960static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
961{
962 int i;
963
964 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
965 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
966 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
967 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
968 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
969 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
970 dst->agg[i] = cpu_to_le64(src->agg[i]);
971 }
972
973 dst->kb_base = cpu_to_le32(src->kb_base);
974 dst->unit_base = cpu_to_le32(src->unit_base);
975 dst->groupid = cpu_to_le32(src->groupid);
976 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
977}
978
979/*
980 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
981 * into a single payload.
982 */
983void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
984{
985 struct cmd_ts_pdu p;
986 int i, j;
987
988 dprint(FD_NET, "server sending end stats\n");
989
990 memset(&p, 0, sizeof(p));
991
992 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
993 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
994 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
995
996 p.ts.error = cpu_to_le32(ts->error);
997 p.ts.thread_number = cpu_to_le32(ts->thread_number);
998 p.ts.groupid = cpu_to_le32(ts->groupid);
999 p.ts.pid = cpu_to_le32(ts->pid);
1000 p.ts.members = cpu_to_le32(ts->members);
1001 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1002
1003 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1004 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1005 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1006 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1007 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1008 }
1009
1010 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1011 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1012 p.ts.ctx = cpu_to_le64(ts->ctx);
1013 p.ts.minf = cpu_to_le64(ts->minf);
1014 p.ts.majf = cpu_to_le64(ts->majf);
1015 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1016
1017 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1018 fio_fp64_t *src = &ts->percentile_list[i];
1019 fio_fp64_t *dst = &p.ts.percentile_list[i];
1020
1021 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
1022 }
1023
1024 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1025 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1026 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1027 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1028 }
1029
1030 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1031 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1032 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1033 }
1034
1035 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1036 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1037 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1038
1039 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1040 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1041 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1042 }
1043
1044 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1045 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1046
1047 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1048 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1049 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1050 }
1051
1052 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1053 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1054 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1055 p.ts.first_error = cpu_to_le32(ts->first_error);
1056 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1057 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1058
1059 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1060 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1061 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1062 p.ts.latency_percentile.u.i = __cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1063
1064 convert_gs(&p.rs, rs);
1065
1066 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), NULL, NULL);
1067}
1068
1069void fio_server_send_gs(struct group_run_stats *rs)
1070{
1071 struct group_run_stats gs;
1072
1073 dprint(FD_NET, "server sending group run stats\n");
1074
1075 convert_gs(&gs, rs);
1076 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, NULL);
1077}
1078
1079static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1080{
1081 int i;
1082
1083 for (i = 0; i < 2; i++) {
1084 dst->ios[i] = cpu_to_le32(src->ios[i]);
1085 dst->merges[i] = cpu_to_le32(src->merges[i]);
1086 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1087 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
1088 }
1089
1090 dst->io_ticks = cpu_to_le32(src->io_ticks);
1091 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
1092 dst->slavecount = cpu_to_le32(src->slavecount);
1093 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1094}
1095
1096static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1097{
1098 int i;
1099
1100 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1101 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1102
1103 for (i = 0; i < 2; i++) {
1104 dst->s.ios[i] = cpu_to_le32(src->s.ios[i]);
1105 dst->s.merges[i] = cpu_to_le32(src->s.merges[i]);
1106 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1107 dst->s.ticks[i] = cpu_to_le32(src->s.ticks[i]);
1108 }
1109
1110 dst->s.io_ticks = cpu_to_le32(src->s.io_ticks);
1111 dst->s.time_in_queue = cpu_to_le32(src->s.time_in_queue);
1112 dst->s.msec = cpu_to_le64(src->s.msec);
1113}
1114
1115void fio_server_send_du(void)
1116{
1117 struct disk_util *du;
1118 struct flist_head *entry;
1119 struct cmd_du_pdu pdu;
1120
1121 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1122
1123 memset(&pdu, 0, sizeof(pdu));
1124
1125 flist_for_each(entry, &disk_list) {
1126 du = flist_entry(entry, struct disk_util, list);
1127
1128 convert_dus(&pdu.dus, &du->dus);
1129 convert_agg(&pdu.agg, &du->agg);
1130
1131 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, NULL);
1132 }
1133}
1134
1135/*
1136 * Send a command with a separate PDU, not inlined in the command
1137 */
1138static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1139 off_t size, uint64_t tag, uint32_t flags)
1140{
1141 struct fio_net_cmd cmd;
1142 struct iovec iov[2];
1143
1144 iov[0].iov_base = (void *) &cmd;
1145 iov[0].iov_len = sizeof(cmd);
1146 iov[1].iov_base = (void *) buf;
1147 iov[1].iov_len = size;
1148
1149 __fio_init_net_cmd(&cmd, opcode, size, tag);
1150 cmd.flags = __cpu_to_le32(flags);
1151 fio_net_cmd_crc_pdu(&cmd, buf);
1152
1153 return fio_sendv_data(sk, iov, 2);
1154}
1155
1156static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log)
1157{
1158 int ret = 0;
1159#ifdef CONFIG_ZLIB
1160 z_stream stream;
1161 void *out_pdu;
1162
1163 /*
1164 * Dirty - since the log is potentially huge, compress it into
1165 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1166 * side defragment it.
1167 */
1168 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1169
1170 stream.zalloc = Z_NULL;
1171 stream.zfree = Z_NULL;
1172 stream.opaque = Z_NULL;
1173
1174 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1175 ret = 1;
1176 goto err;
1177 }
1178
1179 stream.next_in = (void *) log->log;
1180 stream.avail_in = log->nr_samples * log_entry_sz(log);
1181
1182 do {
1183 unsigned int this_len, flags = 0;
1184 int ret;
1185
1186 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1187 stream.next_out = out_pdu;
1188 ret = deflate(&stream, Z_FINISH);
1189 /* may be Z_OK, or Z_STREAM_END */
1190 if (ret < 0)
1191 goto err_zlib;
1192
1193 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1194
1195 if (stream.avail_in)
1196 flags = FIO_NET_CMD_F_MORE;
1197
1198 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
1199 out_pdu, this_len, 0, flags);
1200 if (ret)
1201 goto err_zlib;
1202 } while (stream.avail_in);
1203
1204err_zlib:
1205 deflateEnd(&stream);
1206err:
1207 free(out_pdu);
1208#endif
1209 return ret;
1210}
1211
1212int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1213{
1214 struct cmd_iolog_pdu pdu;
1215 int i, ret = 0;
1216
1217 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1218 pdu.thread_number = cpu_to_le32(td->thread_number);
1219 pdu.log_type = cpu_to_le32(log->log_type);
1220 pdu.compressed = cpu_to_le32(use_zlib);
1221
1222 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1223 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1224
1225 for (i = 0; i < log->nr_samples; i++) {
1226 struct io_sample *s = get_sample(log, i);
1227
1228 s->time = cpu_to_le64(s->time);
1229 s->val = cpu_to_le64(s->val);
1230 s->__ddir = cpu_to_le32(s->__ddir);
1231 s->bs = cpu_to_le32(s->bs);
1232
1233 if (log->log_offset) {
1234 struct io_sample_offset *so = (void *) s;
1235
1236 so->offset = cpu_to_le64(so->offset);
1237 }
1238 }
1239
1240 /*
1241 * Send header first, it's not compressed.
1242 */
1243 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
1244 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
1245 if (ret)
1246 return ret;
1247
1248 /*
1249 * Now send actual log, compress if we can, otherwise just plain
1250 */
1251 if (use_zlib)
1252 return fio_send_iolog_gz(&pdu, log);
1253
1254 return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log,
1255 log->nr_samples * log_entry_sz(log), 0, 0);
1256}
1257
1258void fio_server_send_add_job(struct thread_data *td)
1259{
1260 struct cmd_add_job_pdu pdu;
1261
1262 memset(&pdu, 0, sizeof(pdu));
1263 pdu.thread_number = cpu_to_le32(td->thread_number);
1264 pdu.groupid = cpu_to_le32(td->groupid);
1265 convert_thread_options_to_net(&pdu.top, &td->o);
1266
1267 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, NULL);
1268}
1269
1270void fio_server_send_start(struct thread_data *td)
1271{
1272 assert(server_fd != -1);
1273
1274 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
1275}
1276
1277static int fio_init_server_ip(void)
1278{
1279 struct sockaddr *addr;
1280 socklen_t socklen;
1281 char buf[80];
1282 const char *str;
1283 int sk, opt;
1284
1285 if (use_ipv6)
1286 sk = socket(AF_INET6, SOCK_STREAM, 0);
1287 else
1288 sk = socket(AF_INET, SOCK_STREAM, 0);
1289
1290 if (sk < 0) {
1291 log_err("fio: socket: %s\n", strerror(errno));
1292 return -1;
1293 }
1294
1295 opt = 1;
1296 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1297 log_err("fio: setsockopt: %s\n", strerror(errno));
1298 close(sk);
1299 return -1;
1300 }
1301#ifdef SO_REUSEPORT
1302 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1303 log_err("fio: setsockopt: %s\n", strerror(errno));
1304 close(sk);
1305 return -1;
1306 }
1307#endif
1308
1309 if (use_ipv6) {
1310 const void *src = &saddr_in6.sin6_addr;
1311
1312 addr = (struct sockaddr *) &saddr_in6;
1313 socklen = sizeof(saddr_in6);
1314 saddr_in6.sin6_family = AF_INET6;
1315 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1316 } else {
1317 const void *src = &saddr_in.sin_addr;
1318
1319 addr = (struct sockaddr *) &saddr_in;
1320 socklen = sizeof(saddr_in);
1321 saddr_in.sin_family = AF_INET;
1322 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1323 }
1324
1325 if (bind(sk, addr, socklen) < 0) {
1326 log_err("fio: bind: %s\n", strerror(errno));
1327 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1328 close(sk);
1329 return -1;
1330 }
1331
1332 return sk;
1333}
1334
1335static int fio_init_server_sock(void)
1336{
1337 struct sockaddr_un addr;
1338 socklen_t len;
1339 mode_t mode;
1340 int sk;
1341
1342 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1343 if (sk < 0) {
1344 log_err("fio: socket: %s\n", strerror(errno));
1345 return -1;
1346 }
1347
1348 mode = umask(000);
1349
1350 memset(&addr, 0, sizeof(addr));
1351 addr.sun_family = AF_UNIX;
1352 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1353
1354 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1355
1356 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1357 log_err("fio: bind: %s\n", strerror(errno));
1358 close(sk);
1359 return -1;
1360 }
1361
1362 umask(mode);
1363 return sk;
1364}
1365
1366static int fio_init_server_connection(void)
1367{
1368 char bind_str[128];
1369 int sk;
1370
1371 dprint(FD_NET, "starting server\n");
1372
1373 if (!bind_sock)
1374 sk = fio_init_server_ip();
1375 else
1376 sk = fio_init_server_sock();
1377
1378 if (sk < 0)
1379 return sk;
1380
1381 memset(bind_str, 0, sizeof(bind_str));
1382
1383 if (!bind_sock) {
1384 char *p, port[16];
1385 const void *src;
1386 int af;
1387
1388 if (use_ipv6) {
1389 af = AF_INET6;
1390 src = &saddr_in6.sin6_addr;
1391 } else {
1392 af = AF_INET;
1393 src = &saddr_in.sin_addr;
1394 }
1395
1396 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1397
1398 sprintf(port, ",%u", fio_net_port);
1399 if (p)
1400 strcat(p, port);
1401 else
1402 strncpy(bind_str, port, sizeof(bind_str) - 1);
1403 } else
1404 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1405
1406 log_info("fio: server listening on %s\n", bind_str);
1407
1408 if (listen(sk, 0) < 0) {
1409 log_err("fio: listen: %s\n", strerror(errno));
1410 close(sk);
1411 return -1;
1412 }
1413
1414 return sk;
1415}
1416
1417int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1418 struct in6_addr *inp6)
1419
1420{
1421 int ret = 0;
1422
1423 if (ipv6)
1424 ret = inet_pton(AF_INET6, host, inp6);
1425 else
1426 ret = inet_pton(AF_INET, host, inp);
1427
1428 if (ret != 1) {
1429 struct addrinfo hints, *res;
1430
1431 memset(&hints, 0, sizeof(hints));
1432 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1433 hints.ai_socktype = SOCK_STREAM;
1434
1435 ret = getaddrinfo(host, NULL, &hints, &res);
1436 if (ret) {
1437 log_err("fio: failed to resolve <%s> (%s)\n", host,
1438 gai_strerror(ret));
1439 return 1;
1440 }
1441
1442 if (ipv6)
1443 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1444 else
1445 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1446
1447 ret = 1;
1448 freeaddrinfo(res);
1449 }
1450
1451 return !(ret == 1);
1452}
1453
1454/*
1455 * Parse a host/ip/port string. Reads from 'str'.
1456 *
1457 * Outputs:
1458 *
1459 * For IPv4:
1460 * *ptr is the host, *port is the port, inp is the destination.
1461 * For IPv6:
1462 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1463 * For local domain sockets:
1464 * *ptr is the filename, *is_sock is 1.
1465 */
1466int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1467 int *port, struct in_addr *inp,
1468 struct in6_addr *inp6, int *ipv6)
1469{
1470 const char *host = str;
1471 char *portp;
1472 int lport = 0;
1473
1474 *ptr = NULL;
1475 *is_sock = 0;
1476 *port = fio_net_port;
1477 *ipv6 = 0;
1478
1479 if (!strncmp(str, "sock:", 5)) {
1480 *ptr = strdup(str + 5);
1481 *is_sock = 1;
1482
1483 return 0;
1484 }
1485
1486 /*
1487 * Is it ip:<ip or host>:port
1488 */
1489 if (!strncmp(host, "ip:", 3))
1490 host += 3;
1491 else if (!strncmp(host, "ip4:", 4))
1492 host += 4;
1493 else if (!strncmp(host, "ip6:", 4)) {
1494 host += 4;
1495 *ipv6 = 1;
1496 } else if (host[0] == ':') {
1497 /* String is :port */
1498 host++;
1499 lport = atoi(host);
1500 if (!lport || lport > 65535) {
1501 log_err("fio: bad server port %u\n", lport);
1502 return 1;
1503 }
1504 /* no hostname given, we are done */
1505 *port = lport;
1506 return 0;
1507 }
1508
1509 /*
1510 * If no port seen yet, check if there's a last ',' at the end
1511 */
1512 if (!lport) {
1513 portp = strchr(host, ',');
1514 if (portp) {
1515 *portp = '\0';
1516 portp++;
1517 lport = atoi(portp);
1518 if (!lport || lport > 65535) {
1519 log_err("fio: bad server port %u\n", lport);
1520 return 1;
1521 }
1522 }
1523 }
1524
1525 if (lport)
1526 *port = lport;
1527
1528 if (!strlen(host))
1529 return 0;
1530
1531 *ptr = strdup(host);
1532
1533 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
1534 free(*ptr);
1535 *ptr = NULL;
1536 return 1;
1537 }
1538
1539 if (*port == 0)
1540 *port = fio_net_port;
1541
1542 return 0;
1543}
1544
1545/*
1546 * Server arg should be one of:
1547 *
1548 * sock:/path/to/socket
1549 * ip:1.2.3.4
1550 * 1.2.3.4
1551 *
1552 * Where sock uses unix domain sockets, and ip binds the server to
1553 * a specific interface. If no arguments are given to the server, it
1554 * uses IP and binds to 0.0.0.0.
1555 *
1556 */
1557static int fio_handle_server_arg(void)
1558{
1559 int port = fio_net_port;
1560 int is_sock, ret = 0;
1561
1562 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1563
1564 if (!fio_server_arg)
1565 goto out;
1566
1567 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1568 &port, &saddr_in.sin_addr,
1569 &saddr_in6.sin6_addr, &use_ipv6);
1570
1571 if (!is_sock && bind_sock) {
1572 free(bind_sock);
1573 bind_sock = NULL;
1574 }
1575
1576out:
1577 fio_net_port = port;
1578 saddr_in.sin_port = htons(port);
1579 saddr_in6.sin6_port = htons(port);
1580 return ret;
1581}
1582
1583static void sig_int(int sig)
1584{
1585 if (bind_sock)
1586 unlink(bind_sock);
1587}
1588
1589static void set_sig_handlers(void)
1590{
1591 struct sigaction act;
1592
1593 memset(&act, 0, sizeof(act));
1594 act.sa_handler = sig_int;
1595 act.sa_flags = SA_RESTART;
1596 sigaction(SIGINT, &act, NULL);
1597}
1598
1599static int fio_server(void)
1600{
1601 int sk, ret;
1602
1603 dprint(FD_NET, "starting server\n");
1604
1605 if (fio_handle_server_arg())
1606 return -1;
1607
1608 sk = fio_init_server_connection();
1609 if (sk < 0)
1610 return -1;
1611
1612 set_sig_handlers();
1613
1614 ret = accept_loop(sk);
1615
1616 close(sk);
1617
1618 if (fio_server_arg) {
1619 free(fio_server_arg);
1620 fio_server_arg = NULL;
1621 }
1622 if (bind_sock)
1623 free(bind_sock);
1624
1625 return ret;
1626}
1627
1628void fio_server_got_signal(int signal)
1629{
1630 if (signal == SIGPIPE)
1631 server_fd = -1;
1632 else {
1633 log_info("\nfio: terminating on signal %d\n", signal);
1634 exit_backend = 1;
1635 }
1636}
1637
1638static int check_existing_pidfile(const char *pidfile)
1639{
1640 struct stat sb;
1641 char buf[16];
1642 pid_t pid;
1643 FILE *f;
1644
1645 if (stat(pidfile, &sb))
1646 return 0;
1647
1648 f = fopen(pidfile, "r");
1649 if (!f)
1650 return 0;
1651
1652 if (fread(buf, sb.st_size, 1, f) <= 0) {
1653 fclose(f);
1654 return 1;
1655 }
1656 fclose(f);
1657
1658 pid = atoi(buf);
1659 if (kill(pid, SIGCONT) < 0)
1660 return errno != ESRCH;
1661
1662 return 1;
1663}
1664
1665static int write_pid(pid_t pid, const char *pidfile)
1666{
1667 FILE *fpid;
1668
1669 fpid = fopen(pidfile, "w");
1670 if (!fpid) {
1671 log_err("fio: failed opening pid file %s\n", pidfile);
1672 return 1;
1673 }
1674
1675 fprintf(fpid, "%u\n", (unsigned int) pid);
1676 fclose(fpid);
1677 return 0;
1678}
1679
1680/*
1681 * If pidfile is specified, background us.
1682 */
1683int fio_start_server(char *pidfile)
1684{
1685 pid_t pid;
1686 int ret;
1687
1688#if defined(WIN32)
1689 WSADATA wsd;
1690 WSAStartup(MAKEWORD(2, 2), &wsd);
1691#endif
1692
1693 if (!pidfile)
1694 return fio_server();
1695
1696 if (check_existing_pidfile(pidfile)) {
1697 log_err("fio: pidfile %s exists and server appears alive\n",
1698 pidfile);
1699 free(pidfile);
1700 return -1;
1701 }
1702
1703 pid = fork();
1704 if (pid < 0) {
1705 log_err("fio: failed server fork: %s", strerror(errno));
1706 free(pidfile);
1707 return -1;
1708 } else if (pid) {
1709 int ret = write_pid(pid, pidfile);
1710
1711 free(pidfile);
1712 _exit(ret);
1713 }
1714
1715 setsid();
1716 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1717 log_syslog = 1;
1718 close(STDIN_FILENO);
1719 close(STDOUT_FILENO);
1720 close(STDERR_FILENO);
1721 f_out = NULL;
1722 f_err = NULL;
1723
1724 ret = fio_server();
1725
1726 closelog();
1727 unlink(pidfile);
1728 free(pidfile);
1729 return ret;
1730}
1731
1732void fio_server_set_arg(const char *arg)
1733{
1734 fio_server_arg = strdup(arg);
1735}
fio - Flexible IO Tester